40104565 has 4 divisors (see below), whose sum is σ = 48125484. Its totient is φ = 32083648.

The previous prime is 40104539. The next prime is 40104577. The reversal of 40104565 is 56540104.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27952369 + 12152196 = 5287^2 + 3486^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40104565 is a prime.

It is a super-2 number, since 2×40104565² = 3216752267678450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4010452 + ... + 4010461.

It is an arithmetic number, because the mean of its divisors is an integer number (12031371).

Almost surely, 2^40104565 is an apocalyptic number.

It is an amenable number.

40104565 is a deficient number, since it is larger than the sum of its proper divisors (8020919).

40104565 is an equidigital number, since it uses as much as digits as its factorization.

40104565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8020918.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 40104565 is about 6332.8165140007. The cubic root of 40104565 is about 342.2929360949.

Adding to 40104565 its reverse (56540104), we get a palindrome (96644669).

The spelling of 40104565 in words is "forty million, one hundred four thousand, five hundred sixty-five".